const Koa = require('koa');
const app = new Koa();
const views = require('koa-views');
const json = require('koa-json');
const onerror = require('koa-onerror');
const bodyparser = require('koa-bodyparser');
const log4js = require('koa-log4');
const logger = log4js.getLogger('app');

const index = require('./routes/index');
const users = require('./routes/users');

// error handler
onerror(app);

// middlewares
app.use(bodyparser({
  enableTypes:['json', 'form', 'text']
}));
app.use(json());
app.use(log4js.koaLogger(log4js.getLogger('http'), { level: 'auto' }))
app.use(require('koa-static')(__dirname + '/public'));

app.use(views(__dirname + '/views', {
  extension: 'pug'
}));

// logger
app.use(async (ctx, next) => {
  const start = new Date();
  await next();
  const ms = new Date() - start;
  logger.info(`${ctx.method} ${ctx.url} - ${ms}ms`);
});

// routes
app.use(index.routes(), index.allowedMethods());
app.use(users.routes(), users.allowedMethods());

// error-handling
app.on('error', (err, ctx) => {
    console.log(err);
    logger.error('server error', err, ctx);
});

module.exports = app;
